UA 3873 then AA 5187 at Houston
IAB → Houston → Dallas-Fort Worth
Timetable, Houston time
01:55UA 3873 from IAB at the gate
10:35AA 5187 to Dallas-Fort Worth leaves the gate
8 h 40 apart on the timetable
The last days
UA 3873 and AA 5187 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.